The skydiver in problem 6 opens her chute. The force due to air resistance is now 1200 N. What is the acceleration of the skydiver?

acid rain does not usually kill trees directly. instead, it is more likely to weaken the trees by damaging their leaves, limiting the nutrients available to them, or poisoning them with toxic substances slowly released from the soil. the main atmospheric pollutants that affect trees are nitrates and sulphates.

a polar bond is formed when electrons are shared unevenly between atoms